function allTriShape = generateRandomTriganleTranslateOnly(N)
allTriShape = zeros(2,3,N);
for i=1:N
    offsetX = random('Uniform',0,0.2);
    offsetY = random('Normal',0,0.1);
    [rotMat dummy] = qr(rand(2)); 
    size = random('Normal',1,0.2);
    allTriShape(:,1,i)= size*rotMat*[-1 0]'+[offsetX offsetY]';
    allTriShape(:,2,i)= size*rotMat*[1 0]'+[offsetX offsetY]';
    allTriShape(:,3,i)= size*rotMat*[0 1]'+[offsetX offsetY]';
end